When it comes to our relationship with food, eating behaviour is often limited to discipline, consistency, and adherence to a plan. Success is associated with control, while inconsistency is interpreted as a ‘lack of willpower’ - and this is where we get stuck. 

For many people, the experience of eating does not conform to this model. It is common to move between periods of structure and planning, to moments of impulsivity, emotional eating, or disengagement. These shifts can be confusing and overwhelming, particularly when they seem to contradict your goals or values.

Internal Family Systems (IFS), a psychological model developed by Richard Schwartz, offers a more nuanced way of understanding this dynamic. Rather than viewing the mind as a single, unified voice, IFS suggests that it is composed of multiple 'parts,' each with its own perspective, emotional experience, and intention. These parts interact with one another and can influence behaviour in different ways at different times.

For me personally, I’ve found the parts model of behaviour more helpful than any other kind of structure when it comes to lasting change, and it’s something my clients quite quickly understand and find transformative, especially when it comes to food. 

Understanding the Concept of “Parts”

Within the IFS framework, 'parts' refer to distinct aspects of the psyche that develop over time as adaptive responses to life experiences. Each part carries its own beliefs, motivations, and roles, often shaped by past circumstances.

These parts are not considered inherently problematic. Even those that lead to behaviours perceived as unhelpful, such as overeating or loss of control around food, are understood as attempting to serve a protective function.

This perspective shifts the focus from judgement to understanding - instead of asking why behaviour is 'wrong,' the question becomes what purpose it might be serving within the individual’s internal system.

How Parts Influence Eating Patterns

When applied to eating behaviour, this framework helps explain why individuals often experience internal conflict. For example;

• A person may want to lose weight, and initially commit to this process, yet the anxiety of this causes them to turn to packet foods when stressed, completely overriding original goals. Following this may be overwhelming shame, which is yet another part, which tells you that you 'can't get anything right'. 
• For someone else, a part may convince them that 'diets don't work', 'there is no time', or 'eating junk food is better smoking' - all protective parts who want to maintain the comfort eating or to stay in a body that you don't inherently feel comfortable in.  

Women who have challenges around weight or food often describe a sense of being “pulled” in different directions, particularly when these parts are not understood.

These parts are never operating in isolation - they interact continuously, and their influence can shift depending on internal and external conditions.

This is something most of my clients have experienced and by working in this way it becomes possible to create lasting change. 

Why Willpower-Based Approaches Often Fall Short

Traditional dieting models tend to focus on strengthening control: increasing discipline, tightening rules, and minimising deviation. While this can produce short-term results, it often intensifies internal conflict over time.

When one part is amplified - and particularly if it is a highly controlling or restrictive part - other parts may respond more forcefully. The system becomes polarised, with one aspect pushing for control and another pushing back against it.

This is not a failure of motivation. It is a predictable outcome when internal needs are in opposition and not being acknowledged.

This is also why I will not diet someone who believes a competition, wedding or milestone even serves as a good motivation for weight loss, as I am aware that what is going on internally is driven by one part who desires control, and ofter that goal has finished, the other parts will bring her right back to where she started, activating a shame spiral which for me, as a professional coach and mentor, would rather protect her from. 

If clients are willing to work on the underlying causes for eating behaviour, then weight loss is lasting and successful. If they are not, it becomes just another destabilising behaviour which further dysregulates the system. 

Working With the Internal Parts System

IFS suggests that rather than attempting to suppress or override certain behaviours, a process of understanding and integration is more effective. This involves recognising when different parts are active and developing curiosity about their role. 

For example, an urge to overeat may be examined not as a problem to eliminate, but as a signal that a particular need is not being met - most commonly rest, comfort, or emotional regulation. It may also be a form of escape and respite from the stresses of daily life. 

As parts are better understood, their expression often becomes less extreme. The goal is not to remove them, but to reduce conflict and create a more cooperative internal system.

How This Impacts Eating Behaviour

When this internal dynamic begins to stabilise, eating behaviour often becomes more consistent without relying on force or rigid control. Decisions around food tend to feel less reactive, and the intensity of cravings or urges may decrease. Importantly, this shift does not occur through increased discipline, but through improved alignment within the system itself.

This allows behaviour to emerge from a more integrated place, where different needs are acknowledged rather than competing for dominance.

The Most Practical Starting Point

A useful entry point into this work is developing awareness of internal shifts.

When eating behaviour changes—whether towards structure or away from it—it can be helpful to pause and consider what part may be influencing the experience in that moment. The focus is not on immediate change, but on recognition and understanding.

Over time, this awareness creates space for more intentional responses, rather than automatic reactions. 

The parts model makes it much easier to overcome disordered eating behaviour, and it’s something that can provide relief in the long term. 

Coaching

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